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motoshrump

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About motoshrump

  • Birthday 01/14/1983

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  • Other Bikes
    1984 CR500R, 1987 TRX250R

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  • Gender
    Male
  • Location
    Saint John, NB
  1. I uploaded a couple of pics, not the best resolution but it gets the point across. And no that is not a shadow in the exhaust port. They are both under my only Album. Let me know what you think, Thanks. Here is the other one.
  2. After 14+ years of being on the XX I decided to remove the header and have it glass beaded & repainted. Upon removal I felt obligated to check out the exhaust ports and to my amazement the carbon laid down on the surface of the ports has managed to produce an interesting pattern. On each cylinder there is one exhaust valve port that has a typical amount of carbon (no scale) while the other has absolutely no signs of carbon what so ever. I couldn't have cleaned it better with a sand blaster, a clean bright cast aluminum is all that I can see. The exhaust ports have a fine ridge cast pretty much right down the middle of the port and that produced the defined line between the carboned side and the clean side. The pattern is mirrored between the four cylinders so unless I have cam lobes wore off of all four I don't know how this is possible. The bike has a Dynojet Stage II jet kit with a BMI air filter and stock exhaust. I have had no issues with throttle response/jetting and the bike has only 40,000km. I run the Iridium NGK's & Honda GN4 10W40. Oil consumption is minimal. Has anyone ever seen this before? I can provide a picture if necessary. Thanks in advance.
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